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Gauge.java
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1997-06-23
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/*
* @(#)Gauge.java 1.2 97/01/14 Jeff Dinkins
*
* Copyright (c) 1995-1997 Sun Microsystems, Inc. All Rights Reserved.
*
*/
package actual;
import java.awt.*;
import java.applet.*;
/*
* Gauge - a class that implements a lightweight component
* that can be used, for example, as a performance meter.
*
* Lightweight components can have "transparent" areas, meaning that
* you can see the background of the container behind these areas.
*
*/
public class Gauge extends Component {
// the current and total amounts that the gauge reperesents
int current = 0;
int total = 100;
// The preferred size of the gauge
int Height = 18; // looks good
int Width = 250; // arbitrary
/**
* Constructs a Gauge
*/
public Gauge() {
this(Color.lightGray);
}
/**
* Constructs a that will be drawn uses the
* specified color.
*
* @gaugeColor the color of this Gauge
*/
public Gauge(Color gaugeColor) {
setBackground(gaugeColor);
}
public void paint(Graphics g) {
int barWidth = (int) (((float)current/(float)total) * getSize().width);
g.setColor(getBackground());
g.fill3DRect(0, 0, barWidth, getSize().height-2, true);
}
public void setCurrentAmount(int Amount) {
current = Amount;
// make sure we don't go over total
if(current > 100)
current = 100;
repaint();
}
public int getCurrentAmount() {
return current;
}
public int getTotalAmount() {
return total;
}
public Dimension getPreferredSize() {
return new Dimension(Width, Height);
}
public Dimension getMinimumSize() {
return new Dimension(Width, Height);
}
}